Merge tag 'samsung-fixes-5.5' of https://git.kernel.org/pub/scm/linux/kernel/git...

Samsung fixes for v5.5

1. Restore debugfs support in exynos_defconfig (as now it is not
   selected as dependency of tracing).  Debugfs is required by systemd
   and several tests.
2. Maintainers updates.

* tag 'samsung-fixes-5.5' of https://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux:
  ARM: exynos_defconfig: Restore debugfs support
  MAINTAINERS: Include Samsung SoC serial driver in Samsung SoC entry
  MAINTAINERS: Update Lukasz Luba's email address

Link: https://lore.kernel.org/r/20191215121316.32091-1-krzk@kernel.org
Signed-off-by: Olof Johansson <olof@lixom.net>